Title: Effects of P fertilizer application on yield of spring wheat and characteristics of N absorption and NO_3~--N accumulation in soil profile
Abstract:A field experiment was carried out to study the effects of P fertilizer on yield of spring wheat,N fertilizer absorption characteristics and NO3--N accumulation in Yellow River irrigation area of Ning...A field experiment was carried out to study the effects of P fertilizer on yield of spring wheat,N fertilizer absorption characteristics and NO3--N accumulation in Yellow River irrigation area of Ningxia.The result showed that P fertilizer application increased significantly grain yield and straw yield.The yield of treatment P120 was higher than that of other treatments,which was 6215 kg/hm2.The amount of N accumulation of spring wheat increased during the period from jointing to filling,but decreased by 7.7%~13.4% at ripening.Application of P fertilizer can decrease greatly soil NO3--N content in 0~90 cm soil layer.Compared to P0 treatment,after wheat harvest NO3--N accumulation of P60,P120 and P180 treatment in 0~150 cm soil layer decreased by 50.6,58.5 and 62.9 kg/hm2,respectively.Considering high spring wheat yield,efficiency of P fertilizer and low NO3--N accumulation,the amount of fertilizer P should be controlled within 60~120 kg/hm2.Read More
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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